445653444 has 12 divisors (see below), whose sum is σ = 1039858064. Its totient is φ = 148551144.

The previous prime is 445653443. The next prime is 445653463. The reversal of 445653444 is 444356544.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×445653444² = 397213984298122272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (445653443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18568882 + ... + 18568905.

Almost surely, 2^445653444 is an apocalyptic number.

It is an amenable number.

445653444 is an abundant number, since it is smaller than the sum of its proper divisors (594204620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445653444 is a wasteful number, since it uses less digits than its factorization.

445653444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37137794 (or 37137792 counting only the distinct ones).

The product of its digits is 460800, while the sum is 39.

The square root of 445653444 is about 21110.5055363437. The cubic root of 445653444 is about 763.8341813685.

The spelling of 445653444 in words is "four hundred forty-five million, six hundred fifty-three thousand, four hundred forty-four".